package com.stringtest;

/**
 * @Author: fxy
 * @Date: 2022/04/02/9:01
 * @Description:
 */
public class Test2 {
    public static void main(String[] args) {
        Double a = null;
        System.out.println(String.valueOf(a));
        String s = String.valueOf(a);
        int b = 2;
    }
}
